Rotating multiple objects to specific centre axis
You can Duplicate-Link the poles and rotate the original pole in edit mode:


Start with one pole. Press Alt+D to make the other poles (make sure it's Alt+D, and not Ctrl+D)
Go in top view and rotate each of the two other two poles in object mode by 120 degrees each
Select the original pole and go into edit mode and rotate it towards the red dot in your pic.


Note that whatever edits you do to one pole, it happens to the other poles, but not in object mode.